Battery Type: Li-ion Polymer battery Capacity: 800mAh Nominal Voltage: 3.7V Pack Dimension: 8.0 x 20.5 x 51.0mm Weight: 10g Working Temperature: Less than 60℃(140℉) Compatible Models: Sony Clie PEG-SJ10 Sony Clie PEG-SJ20 Sony Clie PEG-SJ22 Sony Clie PEG-SJ23 Sony Clie PEG-SJ30 Sony Clie PEG-SJ30/GW Sony Clie PEG-SJ30/H Sony Clie PEG-SJ30/HW Sony Clie PEG-SJ30/U Sony Clie PEG-SJ30G Sony Clie PEG-SL10